Cheap flights from Portland to Ireland from $173
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Ireland departing on 9/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Portland to Ireland
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Ireland?
In general, November is the cheapest month to fly from Portland to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $436. If you aren’t able to travel to Ireland during the month of November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $499.
What is the cheapest day to depart on your flight to Ireland?
The cheapest day to depart on your flight to Ireland is on a Tuesday when prices can be found for as low as $560. This is often the case because there is less demand to fly during this day of the week. Flights from Portland to Ireland on a Saturday will generally be more expensive and average around $743. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Ireland?
According to our data, the cheapest time of day to fly to Ireland is at noon. momondo users have found flights departing from Portland to Ireland at noon for as low as $597. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the morning when prices are around $696.
How far in advance should I book a flight to Ireland?
You are more likely to see cheaper flights to Ireland from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $599 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Portland for as low as $567 on momondo.
What is the cheapest airline that flies from Portland to Ireland?
Icelandair, United Airlines, and American Airlines are the most popular carriers operating from Portland to Ireland
What airlines fly to Ireland?
Icelandair, British Airways and United Airlines are the top three most popular airlines that fly to Ireland from Portland according to our data. Icelandair is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 10 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.
Cheap Portland to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland to Ireland
When did momondo last update prices for flights from Portland Airport to Ireland?
Prices for flights from Portland Airport to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Ireland?
As of July 2025, there are 10 operators available to choose from for flights from Portland Airport to Ireland.
How old do you have to be to fly from Portland Airport to Ireland?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Ireland.
What documentation or ID do you need to fly to Ireland?
The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Portland to Ireland
Compare and see reviews for airlines that fly from Portland to Ireland with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $345 | Free Cancellation | Rating 7.0 514 reviews | |||
| PriceFrom $437 | Free Cancellation | Rating 6.6 7,093 reviews | |||
| PriceFrom $453 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $462 | Free Cancellation | Rating 7.8 1,366 reviews | |||
| PriceFrom $466 | Free Cancellation | Rating 7.0 2,819 reviews | |||
| PriceFrom $476 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $483 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $487 | Free Cancellation | Rating 7.1 9,678 reviews | |||
| PriceFrom $500 | Free Cancellation | Rating 6.8 7,207 reviews | |||
| PriceFrom $699 | Free Cancellation | Rating 7.1 1,144 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Portland to Ireland?
It is quick and easy to find Portland to Ireland flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ireland that suits you.
Can I find flights from Portland to Ireland with flexible booking policies on momondo?
Flights from Portland to Ireland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Portland to Ireland?
Once all potential Portland to Ireland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Portland to Ireland right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Portland to Ireland flights. All you need is a valid email address and we will do the rest; it is that quick and easy.